Display screen or portion thereof with transitional graphical user interface



This application is related to U.S. patent application Ser. No.16/379,724, entitled “Mystery Symbol Bonus Symbol Reveal” and U.S.patent application Ser. No. 29/686,998, entitled “Display Screen orPortion Thereof With Transitional Graphical User Interface,” both ofwhich are being filed on the same day as the present application andboth of which are hereby incorporated by reference and for all purposes.

FIG. 1 is a first image in a sequence of a display screen or portionthereof with transitional graphical user interface showing our newdesign;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof; and,

FIG. 5 is the fifth image thereof.

The subject matter in this patent includes a process or period in whichan image changes into another image. This process or period forms nopart of the claimed design.

The dashed broken line in the perimeter of the drawings illustrates adisplay screen or portion thereof and forms no part of the claimeddesign. The remaining dashed broken lines illustrate elements of thegraphical user interface that form no part of the claim.

CLAIM We claim the ornamental design for a display screen or a portionthereof with transitional graphical user interface, as shown anddescribed.